An anonymous bidder in its online auction is paying $2.6 million for lunch with investment icon Warren Buffett, says a San Francisco charity for the homeless.

It has been reported that Buffett offered to host the lunch to help raise money for the Glide Foundation, which aids the homeless in San Francisco's downtown Tenderloin district.

According to the reports of the Wall Street Journal, the Glide staff declined to say who made the winning bid for the lunch date, which would likely be convened at Smith and Wollensky, a favorite haunt for the Oracle of Omaha when he is in Manhattan.

Buffett annually offers the lunch for a party of as many as eight to aid a charity. Friday's winning bid was a record, topping the $2.1 million paid in 2008 by investor Zhao Danyang, the Journal has said.

It was further noted by the report that Glide was the beneficiary this year in part because Buffett's late wife, Susan, had been a volunteer for the organization. (With Inputs from Agencies)